Here's a list of five of the most popular ringback tones in the hip-hop and R&B category at Virgin Mobile USA.

Top Ringback Tone songs choosen by Virgin Mobile subscribers:

• "Shawty Is A 10" (The Dream
• "Bed" (J. Holiday)
• "Heaven Sent" (Keyshia Cole)
• "Crank That - Tell 'Em/Ne-Yo Chorus (Soulja Boy)
• "Apologize" (by OneRepublic featuring Timbaland)

According to new research out from IDC, ringback tones will become even more popular than regular ringtones by the year 2010.  Check out the top 10 ringback tones that U.S. Verizon customers are putting on their phones today. 

List of  Top 10 ringback tones for US Verizon subscribers:

1. I'm Me - Lil Wayne
2. With You - Chris Brown
3. Love In This Club - Usher featuring Young Jeezy
4. Independent - Webbie
5. Low - Flo Rida
6. Suffocate - J. Holiday
7. Superstar - Lupe Fiasco
8. Sorry - Buckcherry
9. No Air duet with Chris Brown - Jordin Sparks ft. Chris Brown
10. Take You There - Sean Kingston

Valentine's Day comes once a year, and whether you love it or hate it, it's a day when you want to have the right tone for you phone to express exactly how you feel. To discover how Americans use their cell phones on V-Day to display their feelings about love...or disgust,  Virgin Mobile USA survied a group of of Adults ages 18-49, and asked them to rate their top ringtones and ringback tones for the current or "ex" lover.

The sultry Alicia Keys popular track "No One" took top honors for "Best Ringtone or Ringback Tone for a Significant Other." Other worthy contenders includ The Temptations' classic "My Girl," Pink Floyd's "Wish You Were Here," and "Make Me Feel Better" by Fabulous.

Best Ringtone or Ringback Tone for a Significant Other:

No One (Alicia Keys) 23%
Wish You Were Here (Pink Floyd) 23%
She's Everything (Brad Paisley) 20%
My Girl (Temptations) 20%
Make Me Better (Fabolous) 6%

Since Valentine's Day is not always a pleasent day for some who have to remember an "Ex", that may leave you feeling less in the than mood for love. Virgin Mobile also got Americans to vote on the Best Ringtone-Ringback Tone to Assign to an "Ex." Quite fittingly, the song"I Hate Everything About You" took the top spot, beating out the Beyonce's "Irreplaceable", and Kelly Clarkson's "Since You've Been Gone," as well as fellow American Idol alum Chris Daughtry's "Over You," and "Ex-Girlfriend."

Best Ringtone/Ringback Tone for an Ex:

I Hate Everything About You 26%
1. Irreplaceable (Beyonce) 19%
2. Since You've Been Gone (Kelly Clarkson) 18%
3. Over You (Daughtry) 17%
4. Ex-Girlfriend 9%

Get in the mood with these Top 5 Hook-Up songs on your cell phone!

Best Hook-Up Song:

1. I Wanna Love You (Akon) 33%
2. She Will be Loved (Maroon 5) 18%
3. French Kissing Life (Kenny Chesney) 18%
4. Suck My Kiss (Red Hot Chili Peppers) 16%
5. Clothes Off (Gym Class Heroes) 4%

No matter how you're feeling this Valentine's Day, there's a song for you that will definitely help set the mood.  The cool thing about personalizing your phone with your favorite V-Day ringbacks or ringtones is that most phones allow you to set different Tones for each of your contacts, so when your friend or lover calls you, they will have there very own ringtone! Now isn't that sweet... 

Verizon has realeased it's Top 10 Ringback Tones for 2007.  They also released the top 10 Verizon ringtones for 2007 as well, find the ringtone top ten list here!

Top 10 Verizon Ringback Tones:

1. "Apologize," by Timbaland
2. "Beautiful Girls (Main Chorus)," by Sean Kingston
3. "Big Girls Don't Cry (Personal)," by Fergie
4. "Buy U A Drank (Shawty Snappin')," by T-Pain
5. "Crank That (Soulja Boy)," by Soulja Boy Tell 'Em
6. "Glamorous," by Fergie
7. "No One," by Alicia Keys
8. "Party Like A Rock Star," by Shop Boyz
9. "Rockstar," by Nickelback
10. "This Is Why I'm Hot (Chorus)," by MIMS